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F. w; SPERR, I; AND A. A. KOHR.

APPARATUS FOR DETERMINING SOLUBLE GAS CONSTITUENTS. APPLICATION'HLED DEC. 3, 1918.

1 ,3 1 6, 602 Patentedfiept. 23, 1919.

wr'ruzssss as e- FREDERECK W. SPERR, JR, OF QAKISIONT, PENIISYLVANIA, :lLND A. ALLISOM EOE-IE, OF NEVJARR NEW JEESEY, ASFQIGNORS TO THE KOPPERS QOMFANY, OF PITTSBURGH, PEIHYSYLVANIA, A CQRPORATION 01* PENNSYLVANIA APZEAEATUS FOR: DETERMINING SDLUBLE 13 CONSTITUENTS.

3pecification of Letters Eatent.

lune

To all whom ma concern:

Be it known that we, Fnconuicn W. Slums,

and Newark, in the county of Essex and State of New Jersey, have invented a new and usefulImprovement in Apparatus for Determining Soluble Gas Constituents, of which the following is a full, clear, and eX- act description, reference being had to the accompanying drawing, forming part of this specification, in which Figure 1 is a sectional plan view of one form of apparatus embodying our invention and Fig. 2 is a vertical section of the same.

- Our invention has relation to apparatus particularly designed for the determination of the amount of benzol in coke oven or illuminating gases, but which may be used for the determination of any constituent of a gas which is soluble in. liquid absorbing medium.

One object of our invention is to provide an apparatus of this character having a plurality of absorbing coils placed in separate vessels and so arranged that the last traces of the absorbable vapors may be removed from the gas. A filll3l181 0l)j60b is to urrange the coil containing vessels in such a manner that both of them may besimulta neously and quickly drained, without the,

necessity for taking apart various connec tions for this purpose. Our invention also provides an apparatus of this character in which the parts may be quickly assembled and removed; and which can be easily cleaned and which'is a compact apparatus of high efiiciency.

The nature of our invention will be best understood by reference to the accompanying drawing in which we have shown a. preferred exnlomliment thereof as heretofore ac tually constructed, and which will now be described, it being premised, however, that various changes can be made in the details of construction, arrangement and combination of the several parts without departing from the spirit and scope of our invention, as defined in the appended claims.

In this drawing the apparatus is shown as consisting of two concentric vessels 2 and 3, each of which contains an absorbing coil,

rat-eaten Sept. as, 1919,

application filed December 3, 1918. Serial No. 255,100:

designated at it and 5, respectively. The outer vessel 3 is-provided with a surrounding water or oil jacket 6 which is shown as being supported upon a suitable frame or stand 7. The upper edge of the inner vessel" is flanged outwardly, as indicated at 2, and this flanged edge is secured to the flanged upper edge 3 of the outer vessel and also to a cover plate 7"- hy suitable means such as sci-vs 8. The plate is extended sufiiciently to also serve as a cover for the jacket forming vessel This jacket is used when ever it is necessary to maintain the temper ature in the absorbing vessels at a point different from the temperature of the atmosphere. The vessels 2 and 3 are preferably constructed of sheet copper while the jacket may be made of galvanized steel or other suitable material.

The inner vessel 2 has an outlet pipe 9 at its lower end which is controlled by a valve 9 mounted on a stem which passes upwardly through a suitable stuffing box 10 secured in the cover plate 7, and provided at its upper end with a suitable actuating means such as the handle ll. The outer vessel 3 has an outlet pipe 12 which extends downwardly through the bottom of the wator j acltet and is provided with a controlling valve 13. The outlet pipe 1.2 has a threaded joint at 1st to permit the removal of the gas 8 absorbing chambers from the water jacket when the screws holding the cover plate to the jacket are removed. The disconnection at the joint 14 can bcreadily effected by turning the plate 7 A circulation can be maintained through the jacket 6 by means of the inlet pipe 15 and outlet pipe 16. 17 is a gas inlet pipe which leads downwardly into the inner vessel 2 and tern'ninates in a jet 18 through which the gas passes into the coil 4. This jet 'is provided with a downwardly extending aspirator pipe 19 which forms the inlet end of the coil 4. The inner chamber has a gas outlet 20 which connects, by a pipe 21, with a second jet 22, which con- 1 nects with the coil 5 and. which has the aspirartor pipe 23. 24 designates a filling connection for the inner vessel and 25 is a gas outlet connection from the outer vessel. 7

The operation of the apparatus, when used for the determination of benzol in coke oven gas, is as follows:

The valve 9 is opened, valve'l3 is closed and outlet pipe 23 is opened. Petroleum sorbing oil is poured in through the opening at :24 in sullicicnt quantity to lill both chambers to a level which is about the top of the coil l, as indicated in Fig. 2. The filling opening is then closed as also the valve 9. The gas inlet pipe 17 is connected with the gas sampling pipe and the outlet pipe 253 is connected with a suitable gas meter. The gas is turned on and is caused to pass through the :u paratus at a definite 'ate, say approximatcly 5 cubic feet per hour, The gas first passes through the inlet pi pc 1? into the jet 18 from which it bubbles through the coil l. in passing through this coil it held in intimate and prolonged contact with the oil therein; and the aspirator action of the jet is such as to continually draw fresh oil in through the aspirator pipe 11.9. The oil with which the gases come in Contact is expelled at the upper end of the coil. The then passes through the pipe 21 to the jet 22 and thence into and through coil 5. The -fresh oil in this coil ef fectively removes the last traces of benzol, and the gas finally escapes through the outlet pipe 25 and is measured by the meter. The valves 9 and 13 may then be opened to simultaneously drain both vessels into a suitable receptacle placed underneath the outlet 12. The valve 13 is then again closed and a little fresh absorbing oil is poured in at 2% and the apparatus shaken so as to rinse both compartments thoroughly. The rinsing oil is drawn oil by opening, the'valve 13. The rinsing may be repeated as often as necessary. The subsequent treatment of the oil consists of distillation, according to wellknown practice, forming no part of the pres ent invention.

The arangement of the two absorbing coils in separate vessels in series enables the gas, after passing through the first coil, to be carried through the second coil having fresh oil therein and which will act to remov the last traces of theabsorbablc vapors. The concentric arrangement of the two vessels makes the apparatus compact and also enables the use of a common top or cover which fa cilitatcs quick openin and cleaning of the apparatus. lVhen the vessels are removed from the ac-lret, in the manner before described, they can be quickly removed from the cover by taking out the screws 8. The jets 18 and 22 are made detachable so that the may be easily cleaned.

b will be noted that the absorbing coils are each of a length materially greater than the depth of the liquid in which it is immcrscd. This gives a long confined path for the gases during; which they are in intimate contact with the liquid. At the same time, the liquid around the exterior of the coils is quiescent. This action results in a very complete absorption of the absorl;;=able vapors nccted in series, and a gas absorbing coil in each of said chambers, said. coils being arranged to be immersed in a liquid in said chambers and having a length greater than the depth of the liquid in which. they are contained, substantially as described.

2. Apparatus 01"- the character described, comprisin two concentrically arranged gas absorbing chambers connected in series, and a gas absorbing coil in each of said chambers, said coils being arranged to be immersed in a liquid in said chambers and having a length greater than the dc 3th of the liquid in which they are contained, substantially as described.

3. Apparatus of the character described, comprising a plurality of chambers connected in series, an absorbing coil in each chamber arranged to be submerged in a liquid there-in, said chambers having outlets lead ing to a common discharge opening, and means for controlling the said opening, substantially as described.

l. Apparatus of the character described, comprising a cover, a support therefor, inner and outer concentric absorbing vessels secured to and suspended from the said cover. and an absorbing coil in each of said vessels, said vessels having a connection whereby the gas after passing through one of the coils may be conducted into the other coil in the other vessel, substantially as described.

5. Apparatus of the character described, comprisinga COVG1,2t support theref0r,inner and outer concentric absorbing vessels secured to and suspended from the said cover, an absorbing coil in each of said vessels, said vessels having a connection whereby the gas after passing through one of the coils may be conducted into the other coil in the other vessel and having bottom outlets arranged to discharge into a common opening, and valve means For controlling sucl discharge, substantially as described.

6. Apparatus of the character described, comprising a plurality of absorbing chambers connected in series, and a gas absorbing .coil in each of said chambers, said coils forming long, closely confined paths for the gas and absorbing liquid, substantially as described.

In testimony whereof, we have hereunto set our hands.

'rnnnnnioK w. SPERR, JR. A. ALLISON KOHR. 

